Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4454310 | Polyamide acid, process for producing same and polyimide obtained therefrom | Hiroshi Oka, Yoshinori Yoshida | 1984-06-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4454310 | Polyamide acid, process for producing same and polyimide obtained therefrom | Hiroshi Oka, Yoshinori Yoshida | 1984-06-12 |